package com.lgj.mall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.lgj.mall.common.constant.ProductConstant;
import com.lgj.mall.common.utils.PageUtils;
import com.lgj.mall.common.utils.Query;
import com.lgj.mall.product.dao.AttrAttrgroupRelationDao;
import com.lgj.mall.product.dao.AttrGroupDao;
import com.lgj.mall.product.dao.CategoryDao;
import com.lgj.mall.product.entity.AttrAttrgroupRelationEntity;
import com.lgj.mall.product.entity.AttrGroupEntity;
import com.lgj.mall.product.entity.CategoryEntity;
import com.lgj.mall.product.service.AttrAttrgroupRelationService;
import com.lgj.mall.product.service.AttrGroupService;
import com.lgj.mall.product.service.CategoryService;
import com.lgj.mall.product.vo.AttrGroupRelationVO;
import com.lgj.mall.product.vo.AttrRespVo;
import com.lgj.mall.product.vo.productVO.AttrVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;


import com.lgj.mall.product.dao.AttrDao;
import com.lgj.mall.product.entity.AttrEntity;
import com.lgj.mall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {
    @Autowired
    private AttrAttrgroupRelationDao attrAttrgroupRelationDao;

    @Autowired
    private AttrAttrgroupRelationService attrAttrgroupRelationService;
//    @Autowired
//    private AttrGroupService attrGroupService;

    @Autowired
    @Lazy
    private  AttrGroupService attrGroupService;

    @Autowired
    private AttrGroupDao attrGroupDao;
    @Autowired
    AttrAttrgroupRelationDao relationDao;


    @Autowired
    CategoryDao categoryDao;

    @Autowired
    CategoryService categoryService;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * 根据属性分组id 查询对应属性的实体信息
     * @param attrgroupId
     * @return
     */

    @Override
    public List<AttrEntity> getRelationAtrr(Long attrgroupId) {
        //1.先获取对应关联实体
        List<AttrAttrgroupRelationEntity> list = attrAttrgroupRelationDao.selectList(new LambdaQueryWrapper<AttrAttrgroupRelationEntity>()
                .eq(AttrAttrgroupRelationEntity::getAttrGroupId, attrgroupId));
        //2.Stream流 根据属性,获取对应的实体信息
        List<AttrEntity> attrEntities = list.stream()
                .map(relation -> this.getById(relation.getAttrId()))
                .filter((relation) -> relation != null)
                .collect(Collectors.toList());

        return attrEntities;
    }

    @Override
    public void deleteRelationAtrr(AttrGroupRelationVO[] vos) {
        //批量转化为实体类对象
        List<AttrAttrgroupRelationEntity> list = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity entity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, entity);
            return entity;
        }).collect(Collectors.toList());
        //批量删除 关联表的数据
        attrAttrgroupRelationDao.removeBatchRelation(list);

    }

//    @Override
//    public List<AttrEntity> getNoAtrrRelation(Long attrgroupId) {
//        //1.获取所有没有关联 所有属性组的 属性
//        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
//        Long catelogId = attrGroupEntity.getCatelogId();    //所属分类
//        //2.查看分类下的所有分组  的id
//        List<AttrGroupEntity> list = attrGroupDao.selectList(new LambdaQueryWrapper<AttrGroupEntity>()
//                .eq(AttrGroupEntity::getCatelogId, catelogId));
//        List<Long> collect = list.stream().map(entity -> {
//            return entity.getAttrGroupId();
//        }).collect(Collectors.toList());
//        //3.获取这些分组的所有关联属性
//        List<AttrAttrgroupRelationEntity> list2 = attrAttrgroupRelationDao.selectList(new LambdaQueryWrapper<AttrAttrgroupRelationEntity>().in(AttrAttrgroupRelationEntity::getAttrGroupId, collect));
//        List<Long> list3 = list2.stream().map(item -> item.getAttrId()).collect(Collectors.toList());
//
//
//        return null;
//    }
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1、当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        //2、当前分组只能关联别的分组没有引用的属性
        //2.1)、当前分类下的其他分组
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> collect = group.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());

        //2.2)、这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        //2.3)、从当前分类的所有属性中移除这些属性；
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>()
                .eq("catelog_id", catelogId);

                //.eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if(attrIds!=null && attrIds.size()>0){
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        PageUtils pageUtils = new PageUtils(page);

        return pageUtils;
    }


    @Transactional
    @Override
    public void saveAttr(AttrVO attr) {
        AttrEntity attrEntity = new AttrEntity();
        attrEntity.setAttrName(attr.getAttrName());
        BeanUtils.copyProperties(attr,attrEntity);
        //1、保存基本数据
        this.save(attrEntity);
        //2、保存关联关系
        if(attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId()!=null){
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            attrAttrgroupRelationService.save(relationEntity);
        }

    }
    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        // 声明返回的对象
        AttrRespVo responseVo = new AttrRespVo();
        // 1.根据ID查询规格参数的基本信息
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity,responseVo);
        // 2.查询关联的属性组信息 中间表
        AttrAttrgroupRelationEntity relationEntity = attrAttrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
        if(relationEntity != null){
            AttrGroupEntity attrGroupEntity = attrGroupService.getById(relationEntity.getAttrGroupId());
            responseVo.setAttrGroupId(attrGroupEntity.getAttrGroupId());
            if(attrGroupEntity != null){
                responseVo.setGroupName(attrGroupEntity.getAttrGroupName());
            }
        }
        // 3.查询关联的类别信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        responseVo.setCatelogPath(catelogPath);

        CategoryEntity categoryEntity = categoryService.getById(catelogId);
        if(categoryEntity!=null){
            responseVo.setCatelogName(categoryEntity.getName());
        }
        return responseVo;
    }
//    @Override
//    public AttrRespVo getAttrInfo(Long attrId) {
//        AttrRespVo respVo = new AttrRespVo();
//        AttrEntity attrEntity = this.getById(attrId);
//        BeanUtils.copyProperties(attrEntity,respVo);
//
//
//
//        if(attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
//            //1、设置分组信息
//            AttrAttrgroupRelationEntity attrgroupRelation = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
//            if(attrgroupRelation!=null){
//                respVo.setAttrGroupId(attrgroupRelation.getAttrGroupId());
//                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupRelation.getAttrGroupId());
//                if(attrGroupEntity!=null){
//                    respVo.setGroupName(attrGroupEntity.getAttrGroupName());
//                }
//            }
//        }
//
//
//        //2、设置分类信息
//        Long catelogId = attrEntity.getCatelogId();
//        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
//        respVo.setCatelogPath(catelogPath);
//
//        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
//        if(categoryEntity!=null){
//            respVo.setCatelogName(categoryEntity.getName());
//        }
//
//
//        return respVo;
//    }
    @Transactional
    @Override
    public void updateAttr(AttrVO attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        this.updateById(attrEntity);

        if(attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            //1、修改分组关联
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();

            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());

            Long count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            if(count>0){

                relationDao.update(relationEntity,new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",attr.getAttrId()));

            }else{
                relationDao.insert(relationEntity);
            }
        }


    }
    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type","base".equalsIgnoreCase(type)?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());

        if(catelogId != 0){
            queryWrapper.eq("catelog_id",catelogId);
        }

        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            //attr_id  attr_name
            queryWrapper.and((wrapper)->{
                wrapper.eq("attr_id",key).or().like("attr_name",key);
            });
        }

        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );

        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> respVos = records.stream().map((attrEntity) -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);

            //1、设置分类和分组的名字
            if("base".equalsIgnoreCase(type)){
                AttrAttrgroupRelationEntity attrId = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (attrId != null && attrId.getAttrGroupId()!=null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }

            }


            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }
            return attrRespVo;
        }).collect(Collectors.toList());

        pageUtils.setList(respVos);
        return pageUtils;
    }
}
